With the surname that you were helping with, there are 3 mentions on the North East Inheritance Database:
Thomas ROWELL, yeoman, of Laverick Hall in the county of Northumberland [Horton, Northumberland]
Date of probate: 15 November 1743
John ROWELL, yeoman, of Laverick Hall in the chapelry of Horton in the county of Northumberland [Horton, Northumberland]
Date of probate: 1776
James ROWELL, yeoman, of Lavericks Hall in the chapelry of Matfen town and county of Newcastle upon Tyne [Matfen, Northumberland]
Date of probate: 3 December 1808
This may be information that you already have covered, and may be some of the people you refer to.